Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Reexamination Certificate
2006-07-25
2006-07-25
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
C359S337130
Reexamination Certificate
active
07081988
ABSTRACT:
The invention discloses an optical amplifier (18) that amplifies signal light in a signal band in a fiber optic transmission system (10) having at least first and second optically pumped signal light gain amplifying stages (30),a tilt controller (40) linked to a control unit,a optical monitor (34) analyzing signal powers,characterized in that the amplified spontaneous emission of the optical amplifier (18) is measured at two extreme wavelengths of the signal band to derive control signals (44) for at least the tilt controller (40).
REFERENCES:
patent: 6160659 (2000-12-01), Kinoshita
patent: 6437906 (2002-08-01), Di Pasquale et al.
patent: 6535330 (2003-03-01), Lelic et al.
patent: 2002/0063950 (2002-05-01), Lee et al.
Charlet Gabriel
Simonneau Christian
Alcatel
Hellner Mark
Sughrue & Mion, PLLC
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